The STI Testing Guide: What to Get, When, and Where (Free Options)

Getting tested is one of the most responsible things you can do — for yourself and for your partners. But the process can feel confusing: which tests do you need? How often? What does the appointment actually involve? This guide breaks it all down in plain language, including how to access free or low-cost testing.

Which Tests You Need

There's no single "STI test" — different infections require different tests. Here's what the CDC recommends based on sexual activity:

STI	Test Type	Window Period	Who Should Get Tested
Chlamydia	Urine sample or swab	1-2 weeks after exposure	All sexually active men annually; more often with new/multiple partners
Gonorrhea	Urine sample or swab	1-2 weeks after exposure	All sexually active men annually; MSM every 3-6 months
HIV	Blood draw or rapid oral swab	10-90 days (varies by test type)	Everyone aged 13-64 at least once; annually if at higher risk
Syphilis	Blood draw	3-6 weeks after exposure	MSM annually; others based on risk factors
Herpes (HSV)	Blood draw or swab of active sore	2-12 weeks for blood test	Not routine; test if you have symptoms or a partner has herpes
HPV	No approved test for men	N/A	Vaccination recommended through age 26 (up to 45 with doctor)
Hepatitis B & C	Blood draw	6 weeks - 6 months	Based on risk factors; Hep B vaccine recommended

Important: "Window period" means the time between exposure and when a test can detect the infection. Testing too early can produce a false negative. If you think you've been exposed, wait the appropriate window period, then test. If you have symptoms, test immediately regardless of timing.

How Often to Get Tested

CDC-Recommended Testing Schedule

Monogamous relationship (both tested) → Baseline test at start of relationship; retest if circumstances change
Multiple partners or new partners → Every 3-6 months for chlamydia, gonorrhea; HIV and syphilis annually
Men who have sex with men (MSM) → Every 3-6 months for gonorrhea, chlamydia, syphilis; HIV every 3-6 months if not on PrEP
Condom broken or skipped → Test 2-4 weeks after the incident; consider PEP within 72 hours if HIV exposure is possible

What the Appointment Looks Like

If you've never been tested, here's exactly what to expect so there are no surprises:

Check-in — Standard paperwork. Many clinics offer anonymous or confidential testing.
Brief history — A provider will ask about your sexual activity, number of partners, condom use, and any symptoms. They're not judging — this is medical history, same as asking about medications or allergies.
Urine sample — For chlamydia and gonorrhea testing. Just pee in a cup. This is the most common test and the easiest.
Blood draw — For HIV, syphilis, hepatitis. A small blood draw from your arm.
Swab (if applicable) — If you have oral or anal sex, throat and/or rectal swabs may be recommended in addition to urine testing, as these sites can be infected independently.
Results — Typically available in 1-7 days depending on the test and location. Many clinics offer online portals for results.

The entire visit usually takes 15-30 minutes. No needles in your penis. No physical genital exam unless you have visible symptoms. It's much less dramatic than most people expect.

Where to Get Tested (Free or Low-Cost)

🏥 Community Health Centers

Federally Qualified Health Centers (FQHCs) offer sliding-scale pricing based on income. Many provide free STI testing. Find one at findahealthcenter.hrsa.gov.

🏫 College Health Centers

Most university health centers offer free or very low-cost STI testing for students. Often the easiest and most accessible option if you're in school.

📱 At-Home Test Kits

Services like Everlywell, myLAB Box, and LetsGetChecked mail test kits to your door. You collect samples at home and mail them back. Results in 2-5 days. Costs $50-200 but insurance may cover it.

🔬 stdtestingquick.com

Find confidential testing locations near you with quick, no-appointment-needed options at nationwide lab networks.

If You Test Positive

A positive result is not the end of the world. Most STIs are treatable, and even the incurable ones (herpes, HIV) are manageable with modern medicine.

Chlamydia & Gonorrhea — Cured with antibiotics, usually a single dose or short course. Very straightforward.
Syphilis — Cured with antibiotics (penicillin injection). Highly effective when caught early.
HIV — Not curable but extremely manageable with antiretroviral therapy (ART). Undetectable = Untransmittable (U=U). People on effective treatment live normal lifespans and cannot transmit the virus to partners.
Herpes — Not curable but manageable with antiviral medication. Outbreaks decrease over time. Extremely common (roughly 1 in 6 Americans has HSV-2).

The most important thing after a positive result: inform your recent partners so they can get tested too. It's uncomfortable but it's the right thing to do, and most people appreciate the honesty.

Prevention

Condoms — Highly effective against most STIs when used correctly. See our condom size chart to find a proper fit (bad fit = more likely to break or slip).
PrEP — Pre-exposure prophylaxis for HIV prevention. 99% effective when taken as prescribed. Available free through programs like freeprep.org.
Vaccination — HPV vaccine (Gardasil 9) and Hepatitis B vaccine are highly effective. Get them if you haven't.
Regular testing — Not prevention exactly, but early detection means early treatment and reduced transmission.

Symptoms to Act On Immediately: Unusual discharge from the penis, pain during urination, sores/bumps/blisters on or around genitals, rash on palms or soles, swollen lymph nodes in the groin. Don't wait for your next scheduled test — go now.

Take Care of Your Sexual Health

Testing is smart. Protection is essential. Both are easier than you think.

Find Testing Near You Get Free PrEP

📚 Sources

CDC. (2021). "Sexually Transmitted Infections Treatment Guidelines." MMWR Recommendations and Reports, 70(4).

CDC. (2023). "Screening Recommendations and Considerations Referenced in STI Treatment Guidelines." cdc.gov/std/treatment.

The STI Testing Guide: What to Get, When, and Where